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import { assertEquals } from "https://deno.land/std@0.157.0/testing/asserts.ts";
import getAllElements from "./index.ts";
Deno.test("all-elements-in-two-binary-search-trees", () => {    const inputs = [        [            {                val: 2,                left: { val: 1, left: null, right: null },                right: { val: 4, left: null, right: null },            },            {                val: 1,                left: { val: 0, left: null, right: null },                right: { val: 3, left: null, right: null },            },        ],        [            { val: 1, left: null, right: { val: 8, left: null, right: null } },            { val: 8, left: { val: 1, left: null, right: null }, right: null },        ],    ];    const outputs = [        [0, 1, 1, 2, 3, 4],        [1, 1, 8, 8],    ];    assertEquals(        outputs,        inputs.map(([root1, root2]) => getAllElements(root1, root2)),    );});